1. Introduction
The Oster 12L Multi Touch Oven Fryer 3-in-1 is a versatile kitchen appliance designed to air fry, roast, and dehydrate food. This manual provides essential information for safe operation, maintenance, and optimal use of your new appliance. Please read all instructions carefully before first use and retain for future reference.

Figure 1: Oster 12L Multi Touch Oven Fryer in operation.
2. Important Safety Instructions
When using electrical appliances, basic safety precautions should always be followed to reduce the risk of fire, electric shock, and injury to persons, including the following:
- Read all instructions before operating the appliance.
- Do not touch hot surfaces. Use handles or knobs.
- To protect against electric shock, do not immerse cord, plugs, or appliance in water or other liquid.
- Close supervision is necessary when any appliance is used by or near children.
- Unplug from outlet when not in use and before cleaning. Allow to cool before putting on or taking off parts.
- Do not operate any appliance with a damaged cord or plug, or after the appliance malfunctions or has been damaged in any manner.
- The use of accessory attachments not recommended by the appliance manufacturer may cause injuries.
- Do not use outdoors.
- Do not let cord hang over edge of table or counter, or touch hot surfaces.
- Do not place on or near a hot gas or electric burner, or in a heated oven.
- Extreme caution must be used when moving an appliance containing hot oil or other hot liquids.
- Always attach plug to appliance first, then plug cord into the wall outlet. To disconnect, turn any control to “off”, then remove plug from wall outlet.
- Do not use appliance for other than intended use.
- Ensure the appliance is placed on a stable, heat-resistant surface, away from walls or other appliances to allow for proper ventilation.
3. Product Components
Your Oster 12L Multi Touch Oven Fryer comes with several accessories to enhance your cooking experience:
- Frying Basket: For air frying smaller items like fries or chicken wings.
- Wire Rack: For baking, roasting, or dehydrating.
- Rotisserie Spit: For roasting whole chickens or larger cuts of meat.
- Rotisserie Handle: For safely removing the rotisserie spit.
- Drip Tray: Collects oil and food debris for easier cleaning.

Figure 2: All included accessories for the Oster Oven Fryer.

Figure 3: Interior view with racks and drip tray.
4. Setup and First Use
4.1 Unpacking
Carefully remove all packaging materials, stickers, and labels from the appliance. Ensure all accessories are present.
4.2 Initial Cleaning
Before first use, wipe the exterior of the appliance with a damp cloth. Wash all removable accessories (frying basket, wire rack, rotisserie spit, drip tray) with warm, soapy water. Rinse thoroughly and dry completely. Do not immerse the main unit in water.
4.3 Placement
Place the appliance on a stable, level, heat-resistant surface. Ensure there is at least 15 cm (6 inches) of clear space on all sides of the appliance to allow for proper air circulation.
4.4 Power Connection
Plug the power cord into a grounded 220V electrical outlet. The appliance is now ready for use.
5. Operating Instructions
The Oster 12L Multi Touch Oven Fryer features a colored touch panel for intuitive control.
5.1 Powering On/Off
- To turn on, press the power button on the touch panel. The display will illuminate.
- To turn off, press and hold the power button until the display turns off.
5.2 Using Pre-Programmed Functions
The appliance includes several pre-programmed functions for common dishes. Simply select the desired icon on the touch panel. The appliance will automatically set the optimal time and temperature.
5.3 Manual Temperature and Time Adjustment
- After selecting a pre-programmed function or choosing a manual mode (e.g., Air Fry, Oven), you can adjust the temperature and time using the dedicated controls.
- Use the temperature control knob to increase or decrease the cooking temperature (0°C to 200°C).
- Use the time control to set the desired cooking duration.
- Press the Start/Pause button to begin or pause cooking.

Figure 4: Digital touch panel for easy operation.
5.4 Shaking Time Alert
For certain recipes, the appliance will emit a “Shaking Time” alert. This reminds you to shake or turn the food for even cooking and browning. Open the door, carefully shake or turn the food using heat-resistant utensils, then close the door to resume cooking.
5.5 Using the Rotisserie Function
- Insert the rotisserie spit through the center of the food (e.g., whole chicken). Secure the food with the rotisserie forks.
- Place the assembled rotisserie spit into the appliance's rotisserie slots.
- Select the rotisserie function on the touch panel or set manually.
- Ensure the drip tray is placed at the bottom to catch any drippings.
Video 1: General overview of an Oster Oven Fryer's features and operation. Note: This video may feature a slightly different model (15L) but demonstrates similar functionalities.
6. Cleaning and Maintenance
Regular cleaning ensures optimal performance and extends the life of your appliance.
6.1 Before Cleaning
- Always unplug the appliance from the power outlet and allow it to cool completely before cleaning.
6.2 Cleaning the Interior and Exterior
- Wipe the exterior with a damp cloth and mild detergent. Do not use abrasive cleaners.
- For the interior, wipe with a damp cloth. For stubborn food residue, use a non-abrasive sponge with warm, soapy water. Ensure the interior is completely dry before next use.
- The removable door can be detached for easier cleaning. Refer to the user manual for specific instructions on door removal and reattachment.
6.3 Cleaning Accessories
- All removable accessories (frying basket, wire rack, rotisserie spit, drip tray) can be washed in warm, soapy water or placed in the dishwasher (if specified by manufacturer).
- Rinse thoroughly and dry completely after washing.
7. Troubleshooting
If you encounter any issues with your appliance, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Appliance does not turn on. | Not plugged in; power outlet issue; appliance not properly connected. | Ensure the power cord is securely plugged into a working 220V outlet. Check the circuit breaker. |
| Food is not cooking evenly. | Overcrowding the basket; insufficient shaking/turning; incorrect temperature/time. | Do not overcrowd the basket. Shake or turn food halfway through cooking. Adjust temperature and time as needed. |
| White smoke coming from the appliance. | Excess oil/grease on heating element or drip tray; food with high fat content. | Clean the drip tray and interior thoroughly. For fatty foods, use less oil or drain excess fat during cooking. |
| Appliance emits a burning smell. | Food residue on heating elements; new appliance smell. | Clean the interior and accessories. A slight burning smell is normal during the first few uses. If it persists, contact customer support. |
8. Specifications
Key technical specifications for the Oster 12L Multi Touch Oven Fryer 3-in-1:
- Model: OFRT790-220
- Capacity: 12 Liters
- Voltage: 220 Volts
- Power: 1800 Watts
- Temperature Range: 0°C to 200°C
- Material: Stainless Steel
- Color: Black
- Dimensions (Product): 38.5 cm (D) x 40.3 cm (W) x 34 cm (H)
- Special Features: Programmable, Timer, Color Touch Panel, Removable Door
9. Warranty and Support
For warranty information, product registration, or technical support, please refer to the warranty card included with your purchase or visit the official Oster website. Do not attempt to repair the appliance yourself, as this will void the warranty.





